Optical design of a near-infrared birefringent filter system and measurement of birefringence index of calcite

Jingshan Wang; Haimin Wang; Thomas J. Spirock; Chik-Yin Lee; Nuggehalli M. Ravindra; Jun Ma; Philip R. Goode; Carsten J. Denker

doi:10.1117/12.405242

24 October 2000 Optical design of a near-infrared birefringent filter system and measurement of birefringence index of calcite

Jingshan Wang, Haimin Wang, Thomas J. Spirock, Chik-Yin Lee, Nuggehalli M. Ravindra, Jun Ma, Philip R. Goode, Carsten J. Denker

Author Affiliations +

Proceedings Volume 4093, Current Developments in Lens Design and Optical Systems Engineering; (2000) https://doi.org/10.1117/12.405242
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

In this paper, we present an optical design of a near- infrared (at FeI 15648.5A) birefringent filter system which is used to obtain the chromatic images of the sun and measure the solar magnetic field at the Big Bear Solar Observatory (BBSO). This system consists of a prefilter,a liquid crystal analyzer, a wavelength-tunable birefringent filter and a Fabry-Perot Etalon. This system is expected to achieve a clean narrow pass band (1/8A). It can also be tuned across the spectral line to obtain line profiles of two0dimensional fields of view. During the design of the tunable near-IR birefringent filter and the test of its components, we found the value of birefringence index μ(n_e-n_o) of calcite at spectral range near 15648.5A is very different from the value in literature. Because the birefringence index is important for the design of birefringent optical components, the birefringence index of calcite and its thermal coefficient are measured. Some test results of the four pairs of calcite plate used in the birefringent filter are presented.

Citation Download Citation

Jingshan Wang, Haimin Wang, Thomas J. Spirock, Chik-Yin Lee, Nuggehalli M. Ravindra, Jun Ma, Philip R. Goode, and Carsten J. Denker "Optical design of a near-infrared birefringent filter system and measurement of birefringence index of calcite", Proc. SPIE 4093, Current Developments in Lens Design and Optical Systems Engineering, (24 October 2000); https://doi.org/10.1117/12.405242

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available